When will Material 2 (useMaterial3: false) be deprecated?

[Gobmichet]

Hi,

Material 3 recently became default with flutter 3.16.

However, Id' like to know until when will we be able to use :
useMaterial3: false,

In order to continue to use Material 2 'cause Material 3 just destroys our apps UI and we will have some work to migrate all of them...

Do we have a date ?

Will we be able to force Material 2 in our flutter apps ad vitam eternam ?

Would love it 'cause i really prefer Material 2 ! (0_o)

[huycozy]

Per Migration guide:

You can still opt out of the Material 3 version of the Material library by specifying useMaterial3: false in your MaterialApp theme.

Doesn't it work on your project? If so, could you be more specific with a specific case (sample code, steps to reproduce)?

When opening an issue, please try to provide all information indicated in the template so that we can address this issue properly (See bug issue template here).

[Gobmichet]

Yes it does work, but i'd want to know until when ? because i read this :

And my problem is to know until when will it work ?

When won't we be able to force the Material2 design for our apps anymore ?

It is very important for us to know that in order to plan our app(s)'s migration(s) (and customization(s) in order to keep the same UI even though passing from Material 2 to 3...)

Thanks in advance.

[zambetpentru]

The question I haven't wanted to ask! Hopefully it is kept for quite a long time as it is quite a change to evaluate across our apps and Material 2 works very nicely today for us - is there a Material 3 theme to mimic the size, colour and spacings of Material 2?

*I don't have a problem with breaking changes in general, the challenge with this one is it requires visual redesign.

[huycozy]

Per Deprecation policy:

Deprecated APIs are removed after a migration grace period. This grace period is one calendar year after being released on the stable channel, or after 4 stable releases, whichever is longer.

But I'm not pretty sure when it's applied for useMaterial3 so I will keep this for other's input.

[HansMuller]

Before we deprecate useMaterial3: false we'll introduce, likely in a separate package, an M2 compatibility theme that preserves as much of the M2 L&F as possible. We'd definitely prefer that developers migrate to M3 but understand that some of the small changes in text styles and the color scheme can be troublesome for existing apps.

CC @QuncCccccc, @TahaTesser, @Piinks

[Gobmichet]

Thanks @HansMuller !
Didnt saw those lines !

That's good news :)

Any idea of a date though ?
Even hypothetic ?

[Piinks]

Closing in favor of #143499 as this is a question rather than an action item.
We're currently working on a backwards compatibility solution for M2, which would be established well before the useMaterial3 flag is deprecated and removed.

[github-actions]

This thread has been automatically locked since there has not been any recent activity after it was closed. If you are still experiencing a similar issue, please open a new bug, including the output of flutter doctor -v and a minimal reproduction of the issue.